Chemistry 9701 · AS & A Level · Reaction kinetics

Reaction kinetics — practice question

The reaction $\text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{Br} + \text{OH}^- \rightarrow \text{CH}_3\text{CH}_2\text{CH}_2\text{CH}_2\text{OH} + \text{Br}^-$ follows an $\text{S}_\text{N}2$ mechanism. The reaction $(\text{CH}_3)_3\text{CBr} + \text{OH}^- \rightarrow (\text{CH}_3)_3\text{COH} + \text{Br}^-$ follows an $\text{S}_\text{N}1$ mechanism. Which statement about these two reactions is correct?

  • ABoth reactions involve homolytic bond fission.
  • BBoth reactions involve hydroxide ions acting as electron pair donors.
  • CBoth reactions involve the formation of a positively-charged intermediate.
  • DBoth reactions occur in a single step.

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